Hi Sweets! I think Rob and Rastagirl777 have given some great information. While I don't know if 6 years counts as a long term business in Jamaica or not, it's where I'm at. It's farther along then some and not nearly as far along as others. I moved down in 2005 and to be honest with you, I did not nearly as much research as I should have. Thankfully I was able to create a business that supports me, enables me to travel and live without taking on additional debt. That however wasn't the case at first. I grossly underestimated the amount I needed to live in Jamaica and how long it would take to build a business in Jamaica.
My first year in Jamaica I took on huge amounts of debt (that has since been paid back thankfully) because I really had no idea what to expect. I didn't live large by any means, but I wanted a place I felt safe, grilled windows, safe area, etc. I've never had AC nor hot water, neither has been much of an issue most of the time.
One bit of advice I would give is to really know who you are dealing with. In my experience vacation friends are rarely long term friends once you're down here or doing business. I've seen so many people get taken advantage of whether living or having a business here. It's really, REALLY hard to watch your business from a far, especially in Jamaica so if you are going to set up a business SI would suggest really investing the time and energy here to know how it runs and to be able to take all precautionary measures to protect it.
Sometimes I seriously wonder how I started a business here and how I made it into what it is. More than anything, I'm thankful for it and thankful that (hopefully) at some point if I decide to leave Jamaica it will be on my own terms and not because my business went bust.
Just make sure you enter all situations with eyes WIDE open, make people earn your trust and don't only know what you're getting into but WHO you're getting into it with. I think all of us that have business down here have made our fair share of mistakes, make sure you learn from your own as well.
Best of luck to you!